Stone-setting tool



Patented Nov. 15, 1921.

' 0. W( JONAS.

STONE SETTING TOOL. APPLICATION-mgm 1uNE19, 1920.

OTTO W. JONAS, OF CHICAGO, ILLINOIS.

STONE-SETTING TOOL.

Application filed June 19,

T o all w hom it may concern Be it known that I, OTTO WV. JONAS, a citizen of the United States, and a resident of the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Stone-Setting Tools, of which the following is a specification.

My invention relates to improvements in stone setting tools, and has for its object the provision of an improved tool, for use by jewelers in setting precious stones in rings, pins and the like, which is of simple construction and eflicient in operation.

Other objects will appear hereinafter.

rlhe invention consists in the combinations and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying' drawings forming a part of this specification, and in which,

Figure l, is a side view of a tool embodying the invention,

Fig. 2, an enlarged partial section of the same, and

Fig. 3, a bottom plan view of the same.

The preferred form of construction, as illustrated in the drawings, comprises a suitable tool handle 4 having an enlarged head 5 at one end. The head 5 is provided with an upwardly tapering conical socket 6 having a plurality of grooves 7 formed in the walls thereof and adapted to receive the prongs 8 of a jewelry setting.

In use, the stone to be set is set in the usual notches provided in the prongs 8 in the usual way, and the socket 6 fitted thereover with the ends of the prongs running in the grooves 7, there being one of the grooves 7 provided for each prong in the setting. rIhen, the tool is pressed downwardly over the edges of the stone, thus forcing the ends of the prongs inwardly against the edges of Specification of Letters Patent.

patented New. is, isei.

1920. Serial No. 390,081.

the stone to set the same, the grooves 7 guidlimited to the precise details of construction set forth, but desire to avail myself of suoli variations and modifications as come within the scope of the appended claims.

Having described my invention, what I claim as new and desire to secure by Letters Patent is zl. A stone setting tool comprising'a head having a socket therein; and a plurality of concaved grooves, having their outer ends equally spaced apart, formed in the walls of said socket fitting the prongs of the setting, substantially as described.

2. A stone setting tool comprising a head having a tapered socket therein; and radially extending concaved grooves provided in the walls of the socket fitting the prongs of the setting, substantially as described.

3. A stone setting tool comprising a handle portion; a head integrally formed on said handle portion; a conical shaped socket formed in said head; and guides provided in said socket fitting and guiding the prongs of the setting, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

OTTO W. JONAS. `Witnesses JOSHUA R. H. Po'rrs, B. G. RICHARDS. 

